Wedge-parallel.



H. HANSEN.

WEDGE PARALLEL. APPucAHoN HLED 1AN.2. 191s.

Patented'Nov. 19, 1918.

/Wfm 25j Wj# HANS. HANSEN, or, Roon ISLAND, iLLrNoIs. p A

` wanen-PARALLEL.'

Be it known thatl I, HANS HANSEN, a citi-` zen ofthe United States, residing at Rock Island, in the county of Rock Island and State offI'llinois, havefinventedI a certain new and usefulV Improvement in ``Wedge` Parallels, of which the following is a full, clear, concise, and exact description, referenceV being had tothe accompanying drawings, forminga part of thisspecification.-

This invention relates to improvements in wedge parallels.` l v `In Patent N o. 833,598 issued to me October'16, 11906- for yimprovement in lgage, yisA shown and described -a wedge parallel such as is adapted for use by machinists vin con--v nection with milling, planing and other machine operations-whereitiis necessary to accurately determine theheight of the work being operated upon at different points. The essential ofsuchl al gage orwedge parallel of course resides in the fact that the upper. and lower'gaging edges or surfaces must be maintained in absolute `parallelism in all adjusted `positions of the wedge .elements. f p

\ In the structure described in said Patent No. 833,598, certain. objectionable -features have been discovered and among them may be mentioned the factsy that a screwdriver or other tool is necessary in'setting or adjusting thev gage and in the actual manufacture, great `dilhculty is experienced in machining the parts so as to obtain the requisite constant parallelism of the gaging edges. The klatterf-diiculty is ldue to the fact that inthe v`structure as shown in said patent, it is necessary to 4maintain substantially absolute parallelism between all of the engaging surfaces of the two `wedge elements including those of the tongue and groove connection. i f

rIhe objectlof the present inventionv is to provide a gage or wedge `parallel which may be readily adjusted without the use of any screw-driver or other tool and which will entail a muchfless manufacturing cost with increased certainty-of the requisite accuracy.

In the drawing forming a part of this specification, Figure 1 is a longitudinal, sectional view of a gage or wedge parallel embodying my improvements. Fig. 2 is a top plan view of the device as illustrated in Fig.

view, taken substantially on the line 3 3 of .ssamm f1-.eats raaf. ,Batentea'nov. 19,1918. ApplicationledJanuary, 1918. Seria1No.21.0,lO0. A

" 10+10 are showin,l each 0f said :wedge ele.

ments having a gage *surface or edge 11 and` an inclined edge 12. As shown inthe draw-- ing, the wedge elements 1010 may be made in the form of castings` and suitably cut away, as indicated at 13-13 to lessen 4the weight and reduce, the amount of material required. i j j v Each wedge element 10,. on its inclined edge is provided with a comparatively deep longitudinally extendinggroove or recess 14 which extends from end to end. At a point. intermediate the vtop and bottom.v of said groove 14, the-sides thereof are undercut, as indicated vat-15--15. Seated in the bottom` of each of said grooveslt and. rigidly held in place therein by a set-screwpl, is an elon gated-plate 17 havingl upturned ends 18--18r for the purpose hereinafter described, itl be! ing observed that each plater 17 equals substantially-the length of the groovein which it is seated. l i Interposed betweenV the wedgeV elements 10-10 are a pair of spring plates,desig nated generally bythe reference A. Each ofsaid plates A consists of a spring steel plate vbent into U-shape so as to provide parallel arms 19 and 20, the width of the latter, throughout their greater` length, being such asto permitthe same tobe seated within the-grooves lk-l. .At their free ends, each of the arms 19 and 20 is provided with lateri ally extended flanges 21-21, the latter be-r ing adapted to -slide within the undercut portions 15-15 of the grooves 14. Each of the elements A is so made that when the sameis applied tothe wedge elements, there will be an inherent spring tension constantly tending tol bring the enlarged ork free ends toward each other. Two of said elements A are preferably employed, the samevbeing oppositely arranged, as indicated in Fig. l. I kFrom the preceding description, it will be seen that'when yall of the parts are assembled, the two elementsA will effectivelyk and constantly draw the two wedge elements into closecontact with eachother on their Wedge elements is permitted, the members A-n sliding with respect to the Wedge elements and the sliding movement of the terial, in obtaining said parallelism, Whether the grooves la are absolutely accurate or not. lt is evident that if the surfaces lZ-lQ are true plain surfaces, the spring-acting members A-A will maintain the Wedge elements in constant and proper contact to insure the parallelism or' the gaging edges necessary and furthermore, the Wedge elements may be adjusted as desired without the use of any tool since it is Vonly necessary to overcome the comparatively slight friction due to the sliding of the members :lr-A relatively to the Wedge `elements 10-l0. Y

The device herein shown and described presents an exceedingly simple and comparatively cheap manufacturing proposition with increased certainty of the requisite accuracy in addition to the fact that'the adjustments may be eii'ected by the user with a minimum of edort. it will be observed also that there are no projecting `parts such as would be liable to be broken or damaged or be caught in the clothing of the user.

I claim:

l. The combination vvith tivo members relatively slidable and having fiat engaging edges, of inherently resilient means slidably connecting said members and holding them in close edge to edge contact with each other, said means being seated partly Within the engaging edge ot one ci said members and partly within the engaging edge of the other ot said members.

rlfhe combination with tivo members relatively slidable and having Hat engaging services, ot' inherently resilient means slidably connecting said members and holding them in close contact` with each other, said means including a tl-shaped spring plate, the tree ends thereof being attached to the said members.

3. In a device or the character described, the combination with Wedge sections, each oi' approximately right-angle triangularV form, the inclined edgeof each section having a longitudinally extending groove there- Jopea of 'this patent may be obtained for ve cents each, ny addressing messes in, of means having portions thereof seated in each of said grooves and extending between said sections to hold them `in close contact With' each other on their inclined edges, said meanspermitting relative Vsliding movement betvveen'said sections.

et. in a device o the character described,

i the combination with two Wedge sections,

edges.

5. lin a device of the character described,

the combination with tivo Wedge` sections with inclined engaging fiat edges, each ot said edges being provided with a longitudinally extending groove, of spring means having portions thereof seated in said grooves and slidably associated with both Wedge sections, and means limiting the relative sliding movement of said sections.

6. ln a device ot the character describeth the combination with tivo Wedge sections oit' approximately right-angle triangular form, the inclined'edges of said sections being fiat and in sliding contact Witheach other, each of said edges having a longitudinally extending undercut groove therein, of a spring plate mounted Within said grooves and having portions thereof engaging in the under- `cut portions of said grooves, said spring plate being slidable with respect to said Wedge sections and preventing relative lateral movement therebetween.

7. in a device et the character described, the combination with two Wedge sections, each of approximately right-angle triangular form, the inclined edges of the Vsections,

having `longitudinally extendingV y grooves therein, portions of said grooves being undercut, of limiting stops at the ends oi'said grooves, and a pair of spring plates mounted in said grooves, each of said spring plates being of lJ-shape with the free ends thereof enlarged and adapted to engage in the undercut portions of said groove, the main portions ot said U-shaped spring plates cori the Gommssioner of Patents,

Washington, E. G. 

